Balancing chemical equations and calculating yield.
Not what you're looking for?
When baking soda (sodium bicarbonate or sodium hydrogen carbonate, NaHCO3) is heated, it releases carbon dioxide gas, which is responsible for the rising of cookies, donuts, and bread. The balanced equation for this process is: 2NaHCO3 ® Na2CO3 + H2O + CO2. Calculate the mass of NaHCO3 required to produce 20.5 g of CO2.
Please see the attached file.
Which of the following equations is balanced?
a. CO2 + 2KOH ® K2CO3 + 2H2O
b. CH4 + 2O2 ® CO2 + 2H2O
c. Be2C + H2O ® 2Be(OH)2 + CH4
d. Cu + 2HNO3 ® Cu(NO3)2 + NO + H2O
Which of the following equations is balanced?
a. 2Mg + O2 ® 2MgO
b. O3 ® 3O2
c. 2H2O2 ® H2O + O2
d. N2 + 3H2 ® 3NH3
The fertilizer ammonium sulfate [(NH4)2SO4] is prepared by the reaction between ammonia (NH3) and sulfuric acid:
2NH3(g) + H2SO4(aq) ® (NH4)2SO4(aq)
How many kilograms of NH3 are needed to produce 1.00 ´ 105 kg of (NH4)2SO4?
a. 1.70 ´ 104 kg
b. 3.22 ´ 103 kg
c. 2.58 ´ 104 kg
d. 7.42 ´ 104 kg
When baking soda (sodium bicarbonate or sodium hydrogen carbonate, NaHCO3) is heated, it releases carbon dioxide gas, which is responsible for the rising of cookies, donuts, and bread. The balanced equation for this process is: 2NaHCO3 ® Na2CO3 + H2O + CO2. Calculate the mass of NaHCO3 required to produce 20.5 g of CO2.
a. 8.38 g
b. 78.3 g
c. 157 g
d. 39.1 g
Purchase this Solution
Solution Summary
The 4 pages solution shows how to solve the three problems dealing with chemical reactions equations and how to obtain the needed results.
Solution Preview
The solution is attached below in two files. the files are identical in content, only differ in format. The first is in MS Word format, while the other is in Adobe pdf format. Therefore you can choose the format that is most suitable to you.
1.
The reaction is imbalanced.
On the LHS we have 4 oxygen atoms, while on the RHS there are 5 oxygen atoms (3 from K2CO3 and 2 from the )
The reaction is balanced. There are one ...
Purchase this Solution
Free BrainMass Quizzes
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
Match Elements with their Symbols
Elements are provided: choose the matching one- or two-letter symbol for each element.
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.